| Kevin Wells | 437db59 | 2010-02-26 15:53:38 -0800 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-lpc32xx/include/mach/uncompress.h |
| 3 | * |
| 4 | * Author: Kevin Wells <kevin.wells@nxp.com> |
| 5 | * |
| 6 | * Copyright (C) 2010 NXP Semiconductors |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | */ |
| 18 | |
| 19 | #ifndef __ASM_ARM_ARCH_UNCOMPRESS_H |
| 20 | #define __ASM_ARM_ARCH_UNCOMPRESS_H |
| 21 | |
| 22 | #include <linux/io.h> |
| 23 | |
| 24 | #include <mach/hardware.h> |
| 25 | #include <mach/platform.h> |
| 26 | |
| 27 | /* |
| 28 | * Uncompress output is hardcoded to standard UART 5 |
| 29 | */ |
| 30 | |
| 31 | #define UART_FIFO_CTL_TX_RESET (1 << 2) |
| 32 | #define UART_STATUS_TX_MT (1 << 6) |
| 33 | |
| 34 | #define _UARTREG(x) (void __iomem *)(LPC32XX_UART5_BASE + (x)) |
| 35 | |
| 36 | #define LPC32XX_UART_DLLFIFO_O 0x00 |
| 37 | #define LPC32XX_UART_IIRFCR_O 0x08 |
| 38 | #define LPC32XX_UART_LSR_O 0x14 |
| 39 | |
| 40 | static inline void putc(int ch) |
| 41 | { |
| 42 | /* Wait for transmit FIFO to empty */ |
| 43 | while ((__raw_readl(_UARTREG(LPC32XX_UART_LSR_O)) & |
| 44 | UART_STATUS_TX_MT) == 0) |
| 45 | ; |
| 46 | |
| 47 | __raw_writel((u32) ch, _UARTREG(LPC32XX_UART_DLLFIFO_O)); |
| 48 | } |
| 49 | |
| 50 | static inline void flush(void) |
| 51 | { |
| 52 | __raw_writel(__raw_readl(_UARTREG(LPC32XX_UART_IIRFCR_O)) | |
| 53 | UART_FIFO_CTL_TX_RESET, _UARTREG(LPC32XX_UART_IIRFCR_O)); |
| 54 | } |
| 55 | |
| 56 | /* NULL functions; we don't presently need them */ |
| 57 | #define arch_decomp_setup() |
| 58 | #define arch_decomp_wdog() |
| 59 | |
| 60 | #endif |
